Add Close Browser in browser-library.robot test file

[lslackware]

Describe the bug
Execution is successful only for "Visit Bing" test case. 2 other tests are failed since first browser is still open.

Please add "Test Teardown Close Browser" in Settings section in file test/browser-library.robot to solve the issue.
And same also in test/selenium.robot file.

To Reproduce
Steps to reproduce the behavior:

1. Clone latest repo
2. execute following command:
   docker run \ -v pwd/reports:/opt/robotframework/reports:Z \ -v pwd/test:/opt/robotframework/tests:Z \ -e BROWSER=chrome \ ppodgorsek/robot-framework:latest

Expected behavior
Browser tests finishes without problems (all green).

Please provide any relevant information, such as:

• OS: MacOS Monterey 12.7.6 (21H1320)
• Browser chrome